Rev'd Up

Rick shifts into high gear when a 1967 Harley motors in for a surprise overhaul. Can he comfortably cruise on this road hog refurbishment, or will this retro joy ride skid out of control? And later, a 1940s U.S. mailbox arrives at the shop. Can the crew swiftly sort through a postal patch up, or will this bulky box be a correspondence catastrophe?